JPH0142101Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is a method for developing and fixing X-ray film by taking out the processing solution from a container storing the processing solution and injecting it into a dental X-ray film package. This invention relates to a dental processing solution injector.

[Conventional example of invention]

In recent years, X-ray photography has been widely used in dental treatment and examinations. X-ray photography is performed using an X-ray film package inserted into the mouth and vagina. After X-ray photography, a developing and fixing solution is injected into the X-ray film package to develop and fix the X-ray film. .
Hereinafter, the X-ray film package will be explained with reference to the drawings.

Figure 2 is a plan view of the dental X-ray film package;
FIG. 3 is a sectional view taken along the line - in FIG. 2.
In each figure, 1 is the X-ray film, 2 is the X-ray film 1
3 is a sealing part for sealing the package 2, and 4 is a tongue piece outside the sealing part 3. Packaging body 2
is made of a material that transmits X-rays but not light rays, and the X-ray film 1 is sealed in a package 2. An X-ray image of the affected area can be obtained by applying such an X-ray film package to the affected area in the oro-vaginal region and irradiating the affected area with X-rays from the outside.

Conventionally, the development of the X-ray film 1 after X-ray photography has been carried out as follows. That is, first, prepare a syringe, inhale the required amount of developer from the developer container into the syringe, then insert the needle of the syringe into the package 2 from an appropriate position in the package 2, and then insert the needle into the package 2. A developing solution was injected into the package 2.

However, since such a method involves a syringe in the middle, it is not only very difficult to handle, but also because the developer is transferred from the container to the syringe once, there is a risk that the developer will get on your hands. It is difficult to aspirate an appropriate amount of developer into a syringe, and there is always an excess or shortage of developer.

[Purpose of invention]

The purpose of the present invention is to eliminate the above-mentioned drawbacks of the conventional technology and to transfer the processing solution from the storage container into the X-ray film package.
It is an object of the present invention to provide a dental processing solution injector which can be directly injected very easily and without fear of leakage or contact with outside air.

[Summary of the idea]

In order to achieve the above object, the present invention includes a cylinder part that sucks in a developing processing solution, an injection part that injects the liquid in the cylinder part through a valve, a pressing mechanism that presses the piston of the cylinder, and a cylinder part that sucks the developing processing liquid. The main body is provided with a liquid extraction needle that is inserted into the cylinder part and sucks up the liquid through a valve, and an engaging part that engages with the container, and an injection needle that is inserted into the X-ray film package is provided in the injection part of the main body. When the device is attached, the engaging portion of the main body is engaged with the neck of a flexible container that stores a developing processing solution, and the liquid extraction needle is passed through the sealing portion of the container.

[Example of idea]

Hereinafter, the present invention will be explained based on the illustrated embodiments.

FIG. 1a is a cross-sectional view of a main body of a syringe according to an embodiment of the present invention, and FIG. 1b is a cross-sectional view of a container that engages with the main body shown in FIG. 1a. First, the container shown in FIG. 1b will be explained. In the figure, 5 is a container made of flexible synthetic resin, and a developing solution is stored inside the container. The container 5 can be made by various methods, but the simplest method is to weld the edges of two flexible synthetic resin sheets together. 6 is a neck formed on the upper part of the container 5, 7 is a recess formed on the outer surface of the neck 6, and 8 is a sealing part for sealing the neck 6. The developing solution is sealed in the container 5 by the sealing portion 8 .

Next, the main body shown in FIG. 1a will be explained.
10 is a main body of the syringe, and 11 is a cylinder section provided within the main body 10. 12 is a piston of the cylinder portion 11, 13 is a piston rod connected to the piston 12, and 14 is a spring that presses the piston 12 to the right in the figure. 15 is a valve chamber communicating with the cylinder portion 11; 16 is a valve body that opens and closes a passage between the cylinder portion 11 and the valve chamber 15; 17 is a spring that presses the valve body 16 to the right; 18 is communicating with the valve chamber 15. This is an injection part that injects the liquid to the outside of the main body 10. 19 is main body 1
A puller rotatably attached to 0 with a pin 20, 21
is a pusher which is rotatably attached to the puller 19 with a pin 22 and engages with the right end of the piston rod.

Reference numeral 23 designates a gripping portion formed in the lower portion of the main body 10, 24 represents a spherical hollow portion provided in the gripping portion 23, and 25 represents a communication path that communicates the cylinder portion 11 and the hollow portion 24. 26 is a ball inserted into the hollow part 24, 27 is a spring that presses the ball 26 downward, and 28 is a liquid extraction needle fixed to the lower end of the grip part 23 and communicating with the hollow part 24. Reference numeral 29 denotes an engaging portion formed at the lower end of the grip, which engages with the neck portion 6 of the container 5. 30 is formed on the engaging portion 29, and the neck portion 6
This is a protrusion that fits into the recess 7 of the. 31 is the main body 10
This is an injection needle that is attached to the injection section 18 of the X-ray film package and inserted into the X-ray film package.

Next, the operation of this embodiment will be explained. First, the liquid extraction needle 28 is penetrated through the sealing part 8 of the container 5, and then inserted into the container 5. In this state, the engaging portion 29 and the neck 6 of the container 5 are pressed into engagement, and the protrusion 30 of the engaging portion 29 is fitted into the recess 7 of the neck 6, whereby the main body 10 and the container 5 are fixed to each other. Ru. Here, when grasping the grip part 23 and pulling the puller 19 toward you (to the right in the figure) with your fingers, the puller 19 rotates counterclockwise around the pin 20 and moves the pusher 21 to the left. let Therefore, the piston rod 13 is pushed, and the piston 12 moves to the left to discharge the air inside the cylinder portion 11 to the outside of the main body through the valve chamber 15, the injection portion 18, and the injection needle 31 while pushing the valve body 16.

Next, when the finger on the puller 19 is released, the piston 12 is pushed by the spring 14 and returns to the illustrated position, and the puller 19 is also returned to the illustrated position via the pusher 21 pushed back by the piston rod 13. . Due to such return operation of the piston 12, the valve body 16 is pressed by the spring 17 and closes the discharge port of the cylinder portion 11, so that a larger negative pressure is generated inside the cylinder portion 11 as the piston 12 moves to the right. Therefore, the developing processing solution in the container 5 is sucked up from the tip of the liquid extraction needle 28 .
The ball 26 is pushed up against the spring 27 and flows into the cylinder part 11 through the hollow part 24 and the communication passage 25. The developing processing liquid is in the cylinder part 11.
When the inside of the liquid extraction needle 28 is filled, the ball 26 is pressed by the spring 27 to close the communication part between the liquid extraction needle 28 and the hollow part 24.

In this state, when the injection needle 31 is inserted into the X-ray film package and the puller 19 is pulled, the piston 12 moves to the left as described above, and the developing processing liquid sealed in the cylinder section 11 is released. Valve body 16 with spring 1
7 and flows into the X-ray film package through the valve chamber 15, injection section 18, and injection needle 31, whereby the X-ray film is developed. Remove the injection needle 31 from the X-ray film package,
When the finger on the puller 19 is released, the valve body 16 closes, and as the piston 12 is returned to its original position by the spring 14, the processing solution in the container 5 is further discharged to the solution extraction needle 2.
8. Open ball 26, hollow part 24, communication path 25
The liquid is sucked into the cylinder portion 11 through the tube in preparation for the next injection operation.

Since the container 5 is sealed by the sealing part 8 and the ball 26, when the developing processing solution is used and the developing processing solution in the container 5 decreases, the container 5 will respond due to its flexibility. It is deformed by the pressure of the atmosphere. Therefore, the development processing solution can be extracted without any trouble without generating negative pressure in the container 5 and without introducing air into the container 5.

In addition, the processing solution in the container 5 is directly injected into the X-ray film package without using a syringe, making it extremely easy to handle and preventing the solution from leaking or coming into contact with the outside air. can prevent adhesion and deterioration. Furthermore, if the volume of the cylinder portion 11 is determined according to the injection amount, an appropriate amount of the developing processing liquid can be injected, and there will be no excess or deficiency of the liquid.

The structure of the valve portion and the structure of the engaging portion are not limited to those shown in the above embodiments, and any suitable structure may be selected from among known structures.

[Effect of idea]

As described above, in the present invention, the developing solution is sucked up from a sealed flexible container into the cylinder part of the main body through the liquid extraction needle, and then injected into the X-ray film package through the injection needle. As a result, the developing solution can be directly injected without using a syringe, the injection operation is easy, and there is no risk of the solution leaking or coming into contact with the outside air.
Furthermore, since the container is flexible, the developing solution can be smoothly sucked up into the cylinder portion without introducing outside air into the container, and deterioration of the solution can be prevented.

[Brief explanation of drawings]

1a and 1b are cross-sectional views of the main body and container of the syringe according to the embodiment of the present invention, FIG. 2 is a plan view of the X-ray film package, and FIG. 3 is the line shown in FIG. 2.
FIG. 5... Container, 6... Neck, 8... Sealing part, 10
...Main body, 11...Cylinder part, 12...Piston, 15...Valve chamber, 16...Valve body, 18...Injection part, 19...Pulling tool, 21...Press tool, 24...
Hollow part, 25...Communication path, 26...Ball, 28
...liquid extraction needle, 29...engaging portion, 31...injection needle.

Claims (1)

[Scope of utility model registration request] a cylinder part, an injection part communicating with this cylinder,
A valve interposed between the cylinder part and the injection part, a pressing mechanism that presses the piston of the cylinder part, a liquid extraction needle communicating with the cylinder part, a valve interposed between the cylinder part and the liquid extraction needle, and a container. a main body having an engaging part that engages with the injection needle; an injection needle attached to the injection part of the main body; a neck part that engages with the engaging part of the main body; and a sealing part that the liquid extraction needle passes through. 1. A dental developing solution injector comprising: a flexible container in which a developing solution is sealed;